File: jump_label.c

package info (click to toggle)
linux 4.19.249-2
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 968,784 kB
  • sloc: ansic: 16,810,930; asm: 272,263; makefile: 38,450; sh: 33,900; perl: 27,702; python: 21,148; cpp: 5,068; yacc: 4,650; lex: 2,584; awk: 1,386; ruby: 25; sed: 5
file content (35 lines) | stat: -rw-r--r-- 816 bytes parent folder | download | duplicates (8)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/jump_label.h>
#include <asm/patch.h>
#include <asm/insn.h>

static void __arch_jump_label_transform(struct jump_entry *entry,
					enum jump_label_type type,
					bool is_static)
{
	void *addr = (void *)entry->code;
	unsigned int insn;

	if (type == JUMP_LABEL_JMP)
		insn = arm_gen_branch(entry->code, entry->target);
	else
		insn = arm_gen_nop();

	if (is_static)
		__patch_text_early(addr, insn);
	else
		patch_text(addr, insn);
}

void arch_jump_label_transform(struct jump_entry *entry,
			       enum jump_label_type type)
{
	__arch_jump_label_transform(entry, type, false);
}

void arch_jump_label_transform_static(struct jump_entry *entry,
				      enum jump_label_type type)
{
	__arch_jump_label_transform(entry, type, true);
}